Created
October 14, 2018 05:50
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Working with setInterval and setTimeout in #JavaScript
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| body { | |
| background: #eee; | |
| } | |
| #message { | |
| width: 400px; | |
| background: #ddaaaa; | |
| padding: 20px; | |
| font-family: "Gill Sans", "Gill Sans MT", Calibri, "Trebuchet MS", sans-serif; | |
| font-size: 18px; | |
| color: #444; | |
| margin: 0 auto; | |
| text-align: center; | |
| border: 1px solid #ff7777; | |
| font-weight: bold; | |
| opacity: 0; | |
| -webkit-transition: opacity 0.7s; | |
| -moz-transition: opacity 0.7s; | |
| transition: opacity 0.7s; | |
| } | |
| #message.show { | |
| opacity: 1; | |
| -webkit-transition: opacity 0.7s; | |
| -moz-transition: opacity 0.7s; | |
| transition: opacity 0.7s; | |
| } | |
| #colour-changer { | |
| width: 200px; | |
| height: 100px; | |
| margin: 30px auto; | |
| border: 1px solid #000; | |
| background: #fff; | |
| -webkit-transition: background 0.7s; | |
| -moz-transition: background 0.7s; | |
| transition: background 0.7s; | |
| } |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>JavaScript</title> | |
| <link rel="stylesheet" href="timers.css" type="text/css" media="screen" charset="utf-8"> | |
| </head> | |
| <body> | |
| <div id="message"> | |
| <p>This is really important notification.</p> | |
| <p>The description of the message.</p> | |
| </div> | |
| <div id="colour-changer"> | |
| </div> | |
| <script src="timers.js"></script> | |
| </body> | |
| </html> |
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| var myMessage = document.getElementById("message"); | |
| var colourChanger = document.getElementById("colour-changer"); | |
| var colours = ["red", "blue", "green", "pink"]; | |
| var counter = 0; | |
| function showMessage() { | |
| myMessage.className = "show"; | |
| } | |
| setTimeout(showMessage, 3000); | |
| function changeColour() { | |
| if (counter >= colours.length) { | |
| counter = 0; | |
| } | |
| colourChanger.style.background = colours[counter]; | |
| counter++; | |
| } | |
| var colourTimer = setInterval(changeColour, 2000); | |
| colourChanger.onclick = function() { | |
| // this is how we reset an interval | |
| clearInterval(colourTimer); | |
| colourChanger.innerHTML = "Timer Stopped"; | |
| }; |
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